If you have the time and the energy, you could try asking local archives, military historians and those interested in the history of fashion, if any of your photos are of interest to them.
In our age group we probably all have photos of a quantity of unknown friends and relatives in the uniforms of both world wars, and any armed conflict since then.
Scores of wedding photos, ladies dressed for garden parties, godmothers with infants after the christening and so on - any or all of this might be of interest to historians.
My sister's children have all the family photos they want, so I sent my cousins the photos from our common grandparents' time, as some of their children are interested in knowing who these people were, or at least what the looked like.